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Finding the Fourth Proportional to 25,665.62, 35,416.89 and 14,909.54

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Solution

The fourth proportional to 25,665.62, 35,416.89 and 14,909.54 is: 20,574.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,665.62 : 35,416.89 = 14,909.54 : x
  2. Step 2: Convert to fraction form
    25,665.62/35,416.89 = 14,909.54/x
  3. Step 3: Cross multiply
    25,665.62x = 35,416.89 × 14,909.54
  4. Step 4: Simplify right side
    25,665.62x = 528,049,538.13
  5. Step 5: Solve for x
    x = 528,049,538.13/25,665.62
  6. Step 6: Final answer
    x = 20,574.20

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.